9886396640 has 24 divisors (see below), whose sum is σ = 23356612440. Its totient is φ = 3954558592.

The previous prime is 9886396627. The next prime is 9886396739. The reversal of 9886396640 is 466936889.

It is a self number, because there is not a number n which added to its sum of digits gives 9886396640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30894830 + ... + 30895149.

It is an arithmetic number, because the mean of its divisors is an integer number (973192185).

Almost surely, 2^9886396640 is an apocalyptic number.

It is an amenable number.

9886396640 is an abundant number, since it is smaller than the sum of its proper divisors (13470215800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9886396640 is a wasteful number, since it uses less digits than its factorization.

9886396640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61789994 (or 61789986 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 59.

The square root of 9886396640 is about 99430.3607556565. The cubic root of 9886396640 is about 2146.2452323077.

The spelling of 9886396640 in words is "nine billion, eight hundred eighty-six million, three hundred ninety-six thousand, six hundred forty".